2c on 1c Green, 4c on 2c Carmine, Offices in China, Local Surcharges (K17, K18). 1c Top Plate No. 10595 Block of Six, natural pre-print crease, 2c Top Plate No. 13077 Block of Six, One of Only Four to Six Plate Blocks That Exist with this No. for this Stamp, perfs close to tiny bit in, typical centering and the only way the 2c exists, Rare Specialist Lot, Complete Background Information Accompanies (Image Magnifier)